1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
namespace OpenSim.Framework
{
/// <summary>
/// Naive pool implementation.
/// </summary>
/// <remarks>
/// Currently assumes that objects are in a useable state when returned.
/// </remarks>
public class Pool<T>
{
/// <summary>
/// Number of objects in the pool.
/// </summary>
public int Count
{
get
{
lock (m_pool)
return m_pool.Count;
}
}
private Stack<T> m_pool;
/// <summary>
/// Maximum pool size. Beyond this, any returned objects are not pooled.
/// </summary>
private int m_maxPoolSize;
private Func<T> m_createFunction;
public Pool(Func<T> createFunction, int maxSize)
{
m_maxPoolSize = maxSize;
m_createFunction = createFunction;
m_pool = new Stack<T>(m_maxPoolSize);
}
public T GetObject()
{
lock (m_pool)
{
if (m_pool.Count > 0)
return m_pool.Pop();
else
return m_createFunction();
}
}
public void ReturnObject(T obj)
{
lock (m_pool)
{
if (m_pool.Count >= m_maxPoolSize)
return;
else
m_pool.Push(obj);
}
}
}
}
|
